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Old 07-15-2020, 09:50 AM   #1
dbarton
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Default More on 240 Power Mirror Switches

As I mentioned in my last thread about disassembling 1985 and earlier 240 power mirrors,
http://forums.turbobricks.com/showthread.php?t=355697
I've been working on a page detailing everything I can about 240 power mirrors, mirror switches and electrical circuits.
https://www.240turbo.com/240-powermirrors.html


Johnnya101 peaked my interest (and my OCD) with his 240 mirror switch cleaning guide when he said:
Quote:
I was unable to find ANY information regarding Volvo 240 power mirror switches.
One thing I have begun with is testing continuity on EARLY versus LATE switches. Johnnya101's thread had a comment (post #12) about someone installing an early switch in a '92 240, which "worked as expected" according to the writer, but after I saw the results shown below, the "worked as expected" part has given me a challenge. This will eventually be figured out, but I just wanted to show you people this and gather more insight if anyone has any, since on the surface these two switches appear very, very incompatible.
Dave B
Attached Images
File Type: jpg early-late-compare2.jpg (138.3 KB, 75 views)
File Type: jpg early-late-compare1med.jpg (145.4 KB, 76 views)
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'84 242ti, fourth owner, mine since 2003. Always garaged since brand new. Old-school rounds because I like. B21FT, SDS EFI/IGN, TD04HL-15G, T5Z trans with modded 0.73 OD, 3.91 diff, unmodified G80.
Volvo Ambivalence of Volvo Enthusiast Community: prancingmoose.com/#novolvo
Dave's Volvo Page: davebarton.com
240 Mods and Fixes Pages: 240turbo.com/volvo240mods.html

Last edited by dbarton; 07-18-2020 at 12:50 PM..
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Old 07-15-2020, 02:36 PM   #2
dl242gt
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Looks great Dave. Very clear as to why they are not the same and what connects to what.
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Dave,
1982 242 turbo. 338k miles. MVP coilovers and 3" exhaust. Flowed 405 with a V15. Cossie turbine housing with upgraded compressor housing. 90+, IPD remote oil filter. Some other goodness, too. Been lots of fun over 25 years. Restored in 2k. Now ready for a 2nd restoration.

1993 245 Classic, 435k miles, enem V15. IPD bars and chassis braces. Simons sport exhaust from Scandix. sbabbs ezk chip. Been a good road warrior. Genuine Volvo rebuilt leaky M47.
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Old 07-18-2020, 01:01 PM   #3
dbarton
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Also,
For those who wanted to know how similar the Saab/Porsche mirror switches are to Volvo switches, I disassembled a Saab 900 switch. The Saab switch BTW is the exact same switch used by Porsche.

CONCLUSION: The Saab/Porsche switch is IDENTICAL to the EARLY VOLVO switch in EVERY way, except for the joystick length. The Saab/Porsche joystick is longer, however the joysticks are fully interchangeable if you dismantle it.
Dave B
Attached Images
File Type: jpg saab900switch9blo.jpg (53.8 KB, 36 views)
File Type: jpg saab900switch12blo.jpg (52.6 KB, 36 views)
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Old 07-21-2020, 12:33 AM   #4
swedishiron.com
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Quote:
Originally Posted by dbarton View Post
For those who wanted to know how similar the Saab mirror switches are to Volvo switches, I disassembled a Saab 900 switch.

CONCLUSION: The Saab switch is IDENTICAL to the EARLY VOLVO switch in EVERY way, except for the joystick length.
I can confirm this. I installed SAAB power mirror switches in my '85 245Ti and they operate both mirrors perfectly fine.
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